oracle.toplink.internal.databaseaccess
Class DBasePlatform

java.lang.Object
oracle.toplink.internal.databaseaccess.DatabasePlatform
oracle.toplink.internal.databaseaccess.DBasePlatform

All Implemented Interfaces:

java.lang.Cloneable, java.io.Serializable

public class DBasePlatform

extends DatabasePlatform

Purpose: Provides DBase specific behaviour.

Responsibilities:

• Writing Time & Timestamp as strings since they are not supported.

Since:

TOPLink/Java 1.0

See Also:

Serialized Form

Field Summary

Fields inherited from class oracle.toplink.internal.databaseaccess.DatabasePlatform

DEFAULT_MAX_BATCH_WRITING_SIZE, DEFAULT_PARAMETERIZED_MAX_BATCH_WRITING_SIZE

Constructor Summary

DBasePlatform()

Method Summary

java.lang.Object	convertToDatabaseType(java.lang.Object value) INTERNAL: DBase does not support Time/Timestamp so we must map to strings. 2.0p22: protected->public INTERNAL
int	getMaxFieldNameSize() INTERNAL: returns the maximum number of characters that can be used in a field name on this platform.
java.lang.String	getSelectForUpdateString() Most database support a syntax. although don't actually lock the row.
boolean	isDBase()
java.util.Hashtable	maximumNumericValues() Builds a table of minimum numeric values keyed on java class.
java.util.Hashtable	minimumNumericValues() Builds a table of minimum numeric values keyed on java class.
void	printFieldNotNullClause(java.io.Writer writer) Append the receiver's field 'NOT NULL' constraint clause to a writer.
boolean	shouldUseJDBCOuterJoinSyntax() JDBC defines and outer join syntax, many drivers do not support this.
boolean	supportsForeignKeyConstraints()
boolean	supportsPrimaryKeyConstraint()

Methods inherited from class oracle.toplink.internal.databaseaccess.DatabasePlatform

allowsSizeInProcedureArguments, appendParameter, autoCommit, beginTransaction, buildProcedureCallString, clone, commitTransaction, convertObject, copyInto, customModifyInDatabaseCall, executeStoredProcedureCall, getBatchBeginString, getBatchDelimiterString, getBatchEndString, getClassTypes, getConversionManager, getCreationInOutputProcedureToken, getCreationOutputProcedureToken, getCursorCode, getFieldTypeDefinition, getFieldTypes, getInOutputProcedureToken, getJDBCType, getJDBCType, getMaxBatchWritingSize, getMaxForeignKeyNameSize, getObjectFromResultSet, getOperator, getOutputProcedureToken, getPlatformOperators, getProcedureArgumentSetter, getProcedureArgumentString, getProcedureCallHeader, getProcedureCallTail, getQualifiedSequenceTableName, getSelectForUpdateNoWaitString, getSelectSequenceQuery, getSequenceCounterFieldName, getSequenceNameFieldName, getSequencePreallocationSize, getSequenceTableName, getStatementCacheSize, getStoredProcedureParameterPrefix, getStoredProcedureTerminationToken, getStringBindingSize, getTableQualifier, getTimestampFromServer, getTimestampQuery, getTransactionIsolation, getUpdateSequenceQuery, initializePreallocatedSequences, isAccess, isAttunity, isCloudscape, isDB2, isHSQL, isInformix, isInformixOuterJoin, isODBC, isOracle, isPointBase, isSQLAnywhere, isSQLServer, isSybase, printFieldIdentityClause, printFieldNullClause, printValuelist, printValuelist, registerOutputParameter, requiresNamedPrimaryKeyConstraints, requiresProcedureCallBrackets, requiresProcedureCallOuputToken, rollbackTransaction, setConversionManager, setCursorCode, setMaxBatchWritingSize, setParameterValueInDatabaseCall, setSelectSequenceNumberQuery, setSequenceCounterFieldName, setSequenceNameFieldName, setSequencePreallocationSize, setSequenceTableName, setShouldBindAllParameters, setShouldCacheAllStatements, setShouldForceFieldNamesToUpperCase, setShouldIgnoreCaseOnFieldComparisons, setShouldOptimizeDataConversion, setShouldTrimStrings, setStatementCacheSize, setStringBindingSize, setSupportsAutoCommit, setTableQualifier, setTimestampQuery, setTransactionIsolation, setUpdateSequenceQuery, setUsesBatchWriting, setUsesByteArrayBinding, setUsesJDBCBatchWriting, setUsesNativeSequencing, setUsesNativeSQL, setUsesStreamsForBinding, setUsesStringBinding, shouldBindAllParameters, shouldCacheAllStatements, shouldCustomModifyInDatabaseCall, shouldForceFieldNamesToUpperCase, shouldIgnoreCaseOnFieldComparisons, shouldIgnoreException, shouldOptimizeDataConversion, shouldPrintConstraintNameAfter, shouldPrintInOutputTokenBeforeType, shouldPrintOuterJoinInWhereClause, shouldPrintOutputTokenBeforeType, shouldRetrieveSequenceAfterInsert, shouldSequencingUseSeparateAccessor, shouldSequencingUseTransaction, shouldTrimStrings, supportsAutoCommit, supportsNativeSequenceNumbers, toString, updateAndSelectSequence, usesBatchWriting, usesByteArrayBinding, usesJDBCBatchWriting, usesNativeSequencing, usesNativeSQL, usesSequenceTable, usesStreamsForBinding, usesStringBinding, writeLOB

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

DBasePlatform

public DBasePlatform()

Method Detail

convertToDatabaseType

public java.lang.Object convertToDatabaseType(java.lang.Object value)

INTERNAL: DBase does not support Time/Timestamp so we must map to strings. 2.0p22: protected->public INTERNAL

Overrides:

convertToDatabaseType in class DatabasePlatform

getMaxFieldNameSize

public int getMaxFieldNameSize()

INTERNAL: returns the maximum number of characters that can be used in a field name on this platform.

Overrides:

getMaxFieldNameSize in class DatabasePlatform

getSelectForUpdateString

public java.lang.String getSelectForUpdateString()

Description copied from class: DatabasePlatform

Most database support a syntax. although don't actually lock the row. Some require the OF some don't like it.

Overrides:

getSelectForUpdateString in class DatabasePlatform

isDBase

public boolean isDBase()

Overrides:

isDBase in class DatabasePlatform

maximumNumericValues

public java.util.Hashtable maximumNumericValues()

Builds a table of minimum numeric values keyed on java class. This is used for type testing but might also be useful to end users attempting to sanitize values.

NOTE: BigInteger & BigDecimal minimums are dependent upon their precision & Scale

Overrides:

maximumNumericValues in class DatabasePlatform

minimumNumericValues

public java.util.Hashtable minimumNumericValues()

Builds a table of minimum numeric values keyed on java class. This is used for type testing but might also be useful to end users attempting to sanitize values.

NOTE: BigInteger & BigDecimal minimums are dependent upon their precision & Scale

Overrides:

minimumNumericValues in class DatabasePlatform

printFieldNotNullClause

public void printFieldNotNullClause(java.io.Writer writer)

Append the receiver's field 'NOT NULL' constraint clause to a writer.

Overrides:

printFieldNotNullClause in class DatabasePlatform

shouldUseJDBCOuterJoinSyntax

public boolean shouldUseJDBCOuterJoinSyntax()

JDBC defines and outer join syntax, many drivers do not support this. So we normally avoid it.

Overrides:

shouldUseJDBCOuterJoinSyntax in class DatabasePlatform

supportsForeignKeyConstraints

public boolean supportsForeignKeyConstraints()

Overrides:

supportsForeignKeyConstraints in class DatabasePlatform

supportsPrimaryKeyConstraint

public boolean supportsPrimaryKeyConstraint()

Overrides:

supportsPrimaryKeyConstraint in class DatabasePlatform